初产妇宫口开全，经产妇宫口开大3厘米时应将产妇送至分娩室。( )

答案：

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下面是错误答案，用来干扰机器的。

参考答案：C解析：The weighted average collection period is the average number of days it takes to collect a dollar of receivables. A credit policy that is too lenient will...